Package Instance
Lookup for vulnerable packages by Package URL.
GET /api/packages/76874?format=api
{ "url": "http://public2.vulnerablecode.io/api/packages/76874?format=api", "purl": "pkg:ebuild/dev-python/urllib3@1.26.5", "type": "ebuild", "namespace": "dev-python", "name": "urllib3", "version": "1.26.5", "qualifiers": {}, "subpath": "", "is_vulnerable": false, "next_non_vulnerable_version": null, "latest_non_vulnerable_version": null, "affected_by_vulnerabilities": [], "fixing_vulnerabilities": [ { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/6481?format=api", "vulnerability_id": "VCID-8par-whwz-6kft", "summary": "An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33503.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-33503.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-33503", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75145", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75107", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75117", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.7511", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75072", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75083", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75105", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75082", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.7507", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75036", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.7506", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75031", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00863", "scoring_system": "epss", "scoring_elements": "0.75028", "published_at": "2026-04-01T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-33503" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33503" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg", "reference_id": "", "reference_type": "", "scores": [ { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-108.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-108.yaml" }, { "reference_url": "https://github.com/urllib3/urllib3", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/urllib3/urllib3" }, { "reference_url": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec" }, { "reference_url": "https://github.com/urllib3/urllib3/commit/5b047b645f5f93900d5e2fc31230848c25eb1f5f#diff-52026d639119bf1e0364836b4e8a18bd9ed3c95c6ba39b26534a5057a65e35bbR65", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/urllib3/urllib3/commit/5b047b645f5f93900d5e2fc31230848c25eb1f5f#diff-52026d639119bf1e0364836b4e8a18bd9ed3c95c6ba39b26534a5057a65e35bbR65" }, { "reference_url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33503", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33503" }, { "reference_url": "https://security.gentoo.org/glsa/202107-36", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://security.gentoo.org/glsa/202107-36" }, { "reference_url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html" }, { "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1968074", "reference_id": "1968074", "reference_type": "", "scores": [], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1968074" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989848", "reference_id": "989848", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989848" }, { "reference_url": "https://security.archlinux.org/ASA-202106-25", "reference_id": "ASA-202106-25", "reference_type": "", "scores": [], "url": "https://security.archlinux.org/ASA-202106-25" }, { "reference_url": "https://security.archlinux.org/AVG-2038", "reference_id": "AVG-2038", "reference_type": "", "scores": [ { "value": "Medium", "scoring_system": "archlinux", "scoring_elements": "" } ], "url": "https://security.archlinux.org/AVG-2038" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:3473", "reference_id": "RHSA-2021:3473", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:3473" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:4160", "reference_id": "RHSA-2021:4160", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:4160" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:4162", "reference_id": "RHSA-2021:4162", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:4162" }, { "reference_url": "https://access.redhat.com/errata/RHSA-2021:4702", "reference_id": "RHSA-2021:4702", "reference_type": "", "scores": [], "url": "https://access.redhat.com/errata/RHSA-2021:4702" }, { "reference_url": "https://usn.ubuntu.com/5812-1/", "reference_id": "USN-5812-1", "reference_type": "", "scores": [], "url": "https://usn.ubuntu.com/5812-1/" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/76874?format=api", "purl": "pkg:ebuild/dev-python/urllib3@1.26.5", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:ebuild/dev-python/urllib3@1.26.5" } ], "aliases": [ "CVE-2021-33503", "GHSA-q2q7-5pp4-w6pg", "PYSEC-2021-108" ], "risk_score": 4.0, "exploitability": "0.5", "weighted_severity": "8.0", "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-8par-whwz-6kft" }, { "url": "http://public2.vulnerablecode.io/api/vulnerabilities/6289?format=api", "vulnerability_id": "VCID-pu6r-vafw-gfe4", "summary": "The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.", "references": [ { "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28363.json", "reference_id": "", "reference_type": "", "scores": [ { "value": "6.5", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N" } ], "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28363.json" }, { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-28363", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28639", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.2875", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28801", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28825", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28804", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28853", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28897", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28891", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28851", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28783", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28976", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.2885", "published_at": "2026-04-01T12:55:00Z" }, { "value": "0.00107", "scoring_system": "epss", "scoring_elements": "0.28927", "published_at": "2026-04-02T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-28363" }, { "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28363", "reference_id": "", "reference_type": "", "scores": [], "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28363" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "3.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/urllib3/PYSEC-2021-59.yaml", "reference_id": "", "reference_type": "", 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